round

See source on Github 

The round function rounds a number to a given precision. Positive precision rounds to decimal places, negative precision rounds to powers of ten, and the default precision rounds to the nearest integer.

• @param number - The number to round.
• @param precision - The precision to round to. Defaults to 0.
• @returns The rounded number.

Example

round(4.006) // 4
round(4.006, 2) // 4.01
round(4060, -2) // 4100